There are cases I have seen of an intended IC comment posting with an OOC tag. The two common text entry methods I have seen that results in this is when pasting in an asterisk-delimited post that is meant to be IC, and then using the keyboard short-cut to send the post. (If forcing it as an IC post, it will post correctly.) Since the keyboard short-cut will auto-post as OOC in this case, the post will post in the format of Name (ooc) posted something. This is an erroneous mix of both the IC and OOC styles.
Ideally, at the point of pasting in, or subsequently at time of posting, the text would be re-analyzed to process the fact that the first character is an asterisk, and the intent is obviously to post an IC comment. Right now, this is only done when starting with an empty text box and typing in an asterisk as the first character.
The other way this erroneous OOC post can be triggered is to type out an IC post, and then select the first portion, or the whole post and hit shift-asterisk to add in the asterisks, or enter them manually one at a time, either way. Again, the fact that the first character is now an asterisk is not processed. Obviously, a work around is to cut the text, manually type the first asterisk, and paste in the rest of the post, OR just remember to manually hit the POST IC button, I believe.